:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #14161a;
  --ink-2: #464a52;
  --ink-3: #7a7e86;
  --line: #e2e0d9;
  --accent: #e8622c;
  --code-bg: #14161a;
  --code-ink: #d9dbe0;
  --ok: #5fb37c;
  --err: #e46a5e;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 245, 241, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; height: 60px; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; letter-spacing: -0.01em; }
.brand svg { width: 24px; height: 24px; }
.nav { display: flex; gap: 24px; margin-left: auto; font-size: 14px; }
.nav a { text-decoration: none; color: var(--ink-2); }
.nav a:hover { color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 6px;
  font: 500 14px/1 var(--sans); text-decoration: none;
  border: 1px solid var(--ink); background: var(--ink); color: var(--bg);
  transition: background .15s, color .15s;
}
.btn:hover { background: #2a2d33; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--surface); }

/* Hero */
.hero { padding: 88px 0 72px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 13px/1 var(--mono); color: var(--ink-2);
  margin-bottom: 24px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
h1 {
  font-size: clamp(36px, 5.2vw, 58px); line-height: 1.06;
  letter-spacing: -0.03em; font-weight: 600;
  margin: 0 0 24px; max-width: 16ch;
}
.lede { font-size: 19px; color: var(--ink-2); max-width: 56ch; margin: 0 0 32px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 13px; color: var(--ink-3); }

/* Terminal mock */
.term {
  margin-top: 64px;
  background: var(--code-bg); color: var(--code-ink);
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 24px 48px -24px rgba(20,22,26,.35);
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; border-bottom: 1px solid #262930;
  font: 12px/1 var(--mono); color: #8a8e97;
}
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: #33363d; }
.term-bar span { margin-left: 10px; }
.term pre {
  margin: 0; padding: 22px 24px 26px;
  font: 13.5px/1.75 var(--mono); overflow-x: auto;
}
.t-dim { color: #7c818b; }
.t-ok { color: var(--ok); }
.t-err { color: var(--err); }
.t-acc { color: #f0a070; }
.t-b { color: #fff; font-weight: 500; }

/* Sections */
section { padding: 88px 0; border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; margin-bottom: 56px; }
.label { font: 500 13px/1 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; margin: 6px 0 0; }
h2 { font-size: clamp(28px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; margin: 0 0 16px; }
.section-head p { color: var(--ink-2); margin: 0; font-size: 17px; }
h3 { font-size: 17px; font-weight: 600; margin: 0 0 8px; letter-spacing: -0.005em; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.step { padding: 28px 24px 32px; border-left: 1px solid var(--line); }
.step:first-child { border-left: 0; }
.step .n { font: 500 13px/1 var(--mono); color: var(--accent); margin-bottom: 20px; }
.step p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 48px; }
.feature p { margin: 0; color: var(--ink-2); font-size: 15px; }
.feature .ic { width: 20px; height: 20px; margin-bottom: 16px; color: var(--ink); }

/* Principles */
.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); }
.principle { padding: 28px 32px 28px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 40px 1fr; }
.principle:nth-child(even) { padding-left: 32px; border-left: 1px solid var(--line); }
.principle .n { font: 500 13px/1.6 var(--mono); color: var(--ink-3); }
.principle p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 820px; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 32px; display: flex; flex-direction: column; }
.plan.featured { border-color: var(--ink); }
.plan .name { font-weight: 600; font-size: 15px; display: flex; justify-content: space-between; align-items: center; }
.tag { font: 500 11px/1 var(--mono); padding: 5px 8px; border-radius: 4px; background: #fbe6dc; color: #a8431a; text-transform: uppercase; letter-spacing: .05em; }
.price { font-size: 40px; font-weight: 600; letter-spacing: -0.03em; margin: 16px 0 4px; }
.price small { font-size: 15px; font-weight: 400; color: var(--ink-3); letter-spacing: 0; }
.plan .desc { color: var(--ink-2); font-size: 15px; margin: 0 0 24px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 32px; font-size: 15px; }
.plan li { padding: 8px 0 8px 26px; position: relative; border-top: 1px solid var(--line); }
.plan li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 10px; height: 6px; border-left: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); transform: rotate(-45deg); }
.plan .btn { margin-top: auto; justify-content: center; }
.fine { font-size: 13px; color: var(--ink-3); margin-top: 24px; }

/* Roadmap */
.roadmap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.phase { border-top: 2px solid var(--line); padding-top: 20px; }
.phase.current { border-top-color: var(--accent); }
.phase .when { font: 500 12px/1 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; }
.phase.current .when { color: var(--accent); }
.phase ul { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: 15px; }
.phase li { margin-bottom: 6px; }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 20px 32px 20px 0;
  font-weight: 500; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font: 20px/1 var(--mono); color: var(--ink-3); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0 0 22px; color: var(--ink-2); max-width: 68ch; }

/* CTA */
.cta { text-align: left; }
.cta-box { background: var(--ink); color: var(--bg); border-radius: 12px; padding: 56px; display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.cta-box h2 { margin: 0 0 8px; }
.cta-box p { margin: 0; color: #b4b6bb; }
.cta-box .btn { background: var(--bg); color: var(--ink); border-color: var(--bg); }
.cta-box .btn:hover { background: #fff; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 40px 0 56px; font-size: 14px; color: var(--ink-3); }
footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
footer nav { display: flex; gap: 24px; }
footer a { text-decoration: none; color: var(--ink-2); }
footer a:hover { color: var(--ink); }

/* Legal pages */
.legal { padding: 72px 0 96px; border-top: 0; }
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: 40px; max-width: none; }
.legal h2 { font-size: 20px; margin-top: 40px; margin-bottom: 8px; }
.legal p, .legal li { color: var(--ink-2); }
.legal .updated { font: 13px var(--mono); color: var(--ink-3); margin-bottom: 40px; }

/* Responsive */
@media (max-width: 900px) {
  .nav { display: none; }
  .site-header .btn { margin-left: auto; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(3) { border-left: 0; }
  .step:nth-child(n+3) { border-top: 1px solid var(--line); }
  .features { grid-template-columns: 1fr 1fr; }
  .roadmap { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero { padding: 56px 0 48px; }
  section { padding: 64px 0; }
  .steps, .features, .plans, .principles { grid-template-columns: 1fr; }
  .step { border-left: 0; border-top: 1px solid var(--line); }
  .step:first-child { border-top: 0; }
  .principle, .principle:nth-child(even) { padding: 24px 0; border-left: 0; }
  .term pre { font-size: 12px; padding: 18px; }
  .cta-box { padding: 36px 28px; }
}